The holy sanctuary of Prontera.
The Prontera Sanctuary is the central location of the Church of Odin worshippers in Prontera. It is where Rune-Midgartsians go to become Acolytes and Priests. It is also where Rune-Midgartsians go to get married and it's the only location that rents out Peco Peco mounts to Crusaders.
Ragnarok Online II
In the reconstruction of Prontera during the Neu Era, the old Prontera Sanctuary was redesigned to be smaller and less grander than its predecessor. It no longer provides Pecopeco rental services to Crusaders.